package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.dto.DishDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.Employee;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SeatMealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;
import java.util.stream.Collectors;

@Service

public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SeatMealMapper seatMealMapper;


    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
   PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
   Page<Category> page =categoryMapper.query(categoryPageQueryDTO);
   return new PageResult(page.getTotal(),page.getResult());

    }

    @Override
    public void saveCategory(CategoryDTO categoryDTO) {
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setStatus(0);
   /*     category.setCreateUser(BaseContext.getCurrentId());
        category.setCreateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());
        category.setUpdateTime(LocalDateTime.now());*/
        categoryMapper.saveCategory(category);


    }

    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        categoryMapper.update(category);

    }

    @Override
    public void deleteById(Long id) {

        Integer dishCount = dishMapper.countByCategoryId(id);
        if(dishCount>0)
        {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        Integer seatMealCount = seatMealMapper.countByCategoryId(id);
        if(seatMealCount>0)
        {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }


        categoryMapper.deleteById(id);


    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Category category=Category.builder()
                .status(status)
                .id(id)
                .build();
        categoryMapper.update(category);
    }

    @Override
    public List<Category> list(Integer type) {
        List<Category> categoryList = categoryMapper.list(type);
        return categoryList;

    }


}
